Flexibility Formula Pillars featured in this session:

Join this session to build your UNDERSTANDING of what it takes for students to develop strategies for addition & subtraction.

You'll get ideas on what to OBSERVE in your students' thinking and EXPERIENCES you can provide to help your students build strategies.

Christina Tondevold

About Christina Tondevold


Christina Tondevold is a Recovering Traditionalist and the founder of the Virtual Math Summit. She previously taught mathematics traditionally and expected the students to parrot back what she taught them. Now she gets to work with teachers in developing students’ mathematical understandings in ways that are not limited by the traditional ways of doing and teaching mathematics through her site BuildMathMinds.com where you can get PD at Your Fingertips.

Get Ongoing Access 

Get ongoing access to this session (and ALL Virtual Math Summits since 2017) by becoming member of the Build Math Minds PD site.

Join the Build Math Minds PD site to get PD At Your Fingertips. You will have hundreds of elementary math PD videos and continued access to the Virtual Math Summit. 

JOIN THE BUILD MATH MINDS PD SITE NOW